Overview
Stage | Permitting |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Longitudinal retreat
- Longhole stoping
- Drift & Fill
- Cemented rockfill
- Cemented hydraulic fill
|
Mine Life | 10 years (as of Jan 1, 2023) |
The Patterson Lake South (PLS) project hosts the Triple R deposit – the regions largest high-grade deposit at shallow depth and is accessible via all-weather Highway 955 which continues north through the area of the UEX-AREVA Shea Creek deposits to the past producing Cluff Lake uranium mine. Fission has published a Feasibility Study outlining the potential for the Triple R to become one of the lowest cost uranium mines in the world.
Dec. 13, 2023 Fission Uranium Corp. is pleased to announce the 2024 project development program, advancing towards construction and operation of a mine and mill for its PLS high-grade uranium project. The 2024 program will include submission of the Environmental Impact Assessment ("EIS"), resource expansion, ongoing community engagement, completion of the Front End Engineering and Design "FEED" phase, and the commencement of Detailed Engineering. |
Latest News | Fission Submits Draft Environmental Impact Statement for the PLS High-Grade Uranium Project, Saskatchewan March 5, 2024 |
Source:
p. 38
The Patterson Lake South (PLS) Property is currently 100% owned by Fission Uranium Corp.
Contractors
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Deposit Type
- Metamorphic hosted
- Vein / narrow vein
Summary:
The Triple R deposit is considered to be an example of a basement hosted vein-type or fracture-filled uranium deposit.
Appreciable high-grade mineralization is known to occur on the Patterson Lake South (PLS) Property in five zones, which collectively make up the Triple R deposit. From west to east, these zones are: 1) R1515W, 2) R840W, 3) R00E, 4) R780E, and 5) R1620E, the most significant of which is the R780E zone. Uranium mineralization discovered on the PLS Property to date is hosted primarily in basement lithologies with subordinate amounts intersected in the overlying Devonian sedimentary rocks. Mineralized zones occur within or near to the MSZ over a 3.17 km strike length along the PLG-3B EM conductor. The R1620E zone is currently defined by 23 drill holes and is located on the PLG-3C EM conductor, which is considered to be the eastern extension of the MSZ based on geology.
Uranium mineralization at the PLS Property is hosted primarily within metamorphosed basement lithologies and, to a much lesser extent, within overlying Meadow Lake Formation sedimentary rocks.
Mineralization within the Meadow Lake Formation sedimentary rocks typically occurs as fine grained disseminations, sooty blebs, and rarely semi-massive uranium mineralization. Uranium concentrations within the Meadow Lake Formation are generally low to moderate, however, grades greater than 1.00 wt% U3O8 have been intersected. When mineralized, the Meadow Lake Formation is ty ........
Mining Methods
- Longitudinal retreat
- Longhole stoping
- Drift & Fill
- Cemented rockfill
- Cemented hydraulic fill
Summary:
The PLS Project hosts the Triple R deposit, a structurally controlled east-west trending sub-vertical high-grade uranium deposit. The deposit is overlain by 50 m to 100 m of sandy overburden, with the high-grade mineralization located near the bedrock-overburden contact. Bedrock in the project area consists of discontinuous Cretaceous Mannville Group and Devonian La Loche Formation sedimentary bedrock, which overlay Archean basement rocks comprised of gneisses.
The PFS completed in 2019 considered an underground-only mine plan which was designed for extraction of the R780E and R00E orebodies. The mine access was primarily through a decline ramp, and a fresh air intake shaft (FAS) and exhaust air shaft (EAS) were designed to provide both ventilation and secondary egress.
As part of the FS, the mine plan has been updated to include the R840W orebody to the southwest of the R780E and R00E zones. The mine access is planned using a decline from surface and an FAS and EAS. The FS has changed the decline position to the south of the R840W orebody and the capital lateral development has been relocated to the hanging wall of the deposits to remove the potential to interfere with mineralization located in the footwall.
The underground mining method will be primarily longhole retreat stoping using longitudinal methods based on the current geotechnical analysis and orientation of mineralization. Where the mineralization thickness allows, mining will prog ........
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Flow Sheet:
Summary:
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Pipelines and Water Supply
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Projected Production:
Commodity | Units | Avg. Annual | LOM |
U3O8
|
M lbs
| 11 | 91 |
All production numbers are expressed as yellow cake.
Operational Metrics:
Metrics | |
Daily ore mining rate
| ...... |
Daily processing capacity
| ...... |
Annual processing capacity
| ...... |
Waste tonnes, LOM
| ...... |
Ore tonnes mined, LOM
| ...... |
Tonnes processed, LOM
| ...... |
* According to 2023 study.
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Reserves at January 17, 2023:
Underground Mineral Reserves were estimated by creating stope shapes using Datamine’s MSO. MSO was run at an initial COG of 0.20% U3O8.
Mineral Resources are reported at a COG of 0.25% U3O8, based on a long term price of US$50/lb U3O8, an exchange rate of C$1.00/US$0.75, and cost estimates derived during the PFS with a metallurgical recovery of 95%.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Probable
|
3,007 kt
|
U3O8
|
1.41 %
|
93.7 M lbs
|
Indicated
|
2,688 kt
|
U3O8
|
1.94 %
|
114.9 M lbs
|
Indicated
|
2,688 kt
|
Gold
|
0.61 g/t
|
52.7 koz
|
Inferred
|
635 kt
|
U3O8
|
1.1 %
|
15.4 M lbs
|
Inferred
|
635 kt
|
Gold
|
0.44 g/t
|
9 koz
|
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